10021542051331 has 4 divisors (see below), whose sum is σ = 10548991633000. Its totient is φ = 9494092469664.

The previous prime is 10021542051281. The next prime is 10021542051371. The reversal of 10021542051331 is 13315024512001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10021542051331 - 2¹⁵ = 10021542018563 is a prime.

It is a super-2 number, since 2×10021542051331² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10021542051331.

It is not an unprimeable number, because it can be changed into a prime (10021542051371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 263724790806 + ... + 263724790843.

It is an arithmetic number, because the mean of its divisors is an integer number (2637247908250).

Almost surely, 2^{10021542051331} is an apocalyptic number.

10021542051331 is a deficient number, since it is larger than the sum of its proper divisors (527449581669).

10021542051331 is an equidigital number, since it uses as much as digits as its factorization.

10021542051331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527449581668.

The product of its (nonzero) digits is 3600, while the sum is 28.

Adding to 10021542051331 its reverse (13315024512001), we get a palindrome (23336566563332).

The spelling of 10021542051331 in words is "ten trillion, twenty-one billion, five hundred forty-two million, fifty-one thousand, three hundred thirty-one".